Extremely interesting mechanic of reverse progression, quite challenging too. I like how you can fight the same type of enemies but they become more difficult because you become weaker.

I don't know if it is a bug or if I just simply didn't find a difference but Astral Vision doesn't do anything. Maybe it was supposed to turn everything dark so that you couldn't see outside your attack range? Or maybe it stops showing the circle with the 4 points of regeneration?